wanpipe/api/tdm_api/hdlc_decode.c

277 lines
6.6 KiB
C

/*****************************************************************************
* bstrm_hdlc_test_multi.c: Multiple Bstrm Test Receive Module
*
* Author(s): Nenad Corbic <ncorbic@sangoma.com>
*
* Copyright: (c) 1995-2006 Sangoma Technologies Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
* ============================================================================
* Description:
*
* The chdlc_api.c utility will bind to a socket to a chdlc network
* interface, and continously tx and rx packets to an from the sockets.
*
* This example has been written for a single interface in mind,
* where the same process handles tx and rx data.
*
* A real world example, should use different processes to handle
* tx and rx spearately.
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <linux/if_wanpipe.h>
#include <string.h>
#include <signal.h>
#include <wait.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <pthread.h>
#include <linux/wanpipe.h>
#include <linux/wanpipe_tdm_api.h>
#include <libsangoma.h>
#include <wanpipe_hdlc.h>
#define FALSE 0
#define TRUE 1
/* Enable/Disable tx of random frames */
#define RAND_FRAME 0
#define MAX_NUM_OF_TIMESLOTS 32*32
#define LGTH_CRC_BYTES 2
#define MAX_TX_DATA 15000 //MAX_NUM_OF_TIMESLOTS*10 /* Size of tx data */
#define MAX_TX_FRAMES 1000000 /* Number of frames to transmit */
#define WRITE 1
#define MAX_IF_NAME 20
typedef struct {
int sock;
int rx_cnt;
int tx_cnt;
int data;
int last_error;
int frames;
char if_name[MAX_IF_NAME+1];
wanpipe_hdlc_engine_t *hdlc_eng;
} timeslot_t;
timeslot_t tslot_array[MAX_NUM_OF_TIMESLOTS];
int tx_change_data=0, tx_change_data_cnt=0;
int end=0;
void print_packet(unsigned char *buf, int len)
{
int x;
printf("{ | ");
for (x=0;x<len;x++){
if (x && x%24 == 0){
printf("\n ");
}
if (x && x%8 == 0)
printf(" | ");
printf("%02x ",buf[x]);
}
printf("}\n");
}
void sig_end(int sigid)
{
//printf("%d: Got Signal %i\n",getpid(),sigid);
end=1;
}
static unsigned long next = 1;
/* RAND_MAX assumed to be 32767 */
int myrand(int max_rand) {
next = next * 1103515245 + 12345;
return((unsigned)(next/65536) % max_rand);
}
void mysrand(unsigned seed) {
next = seed;
}
/*===================================================
* MakeConnection
*
* o Create a Socket
* o Bind a socket to a wanpipe network interface
* (Interface name is supplied by the user)
*==================================================*/
/***************************************************************
* Main:
*
* o Make a socket connection to the driver.
* o Call process_con() to read/write the socket
*
**************************************************************/
typedef unsigned int guint32;
typedef int gint32;
typedef unsigned short guint16;
static int trace_aft_hdlc_data(wanpipe_hdlc_engine_t *hdlc_eng, void *data, int len)
{
printf("GOT HDLC DATA Len=%i\n",len);
print_packet(data,len);
}
#pragma pack(1)
typedef struct pcap_hdr_s {
guint32 magic_number; /* magic number */
guint16 version_major; /* major version number */
guint16 version_minor; /* minor version number */
gint32 thiszone; /* GMT to local correction */
guint32 sigfigs; /* accuracy of timestamps */
guint32 snaplen; /* max length of captured packets, in octets */
guint32 network; /* data link type */
} pcap_hdr_t;
#if 0
typedef struct pcaprec_hdr_s {
unsigned int ts_sec; /* timestamp seconds */
unsigned int ts_usec; /* timestamp microseconds */
unsigned short incl_len;
} pcaprec_hdr_t;
#else
typedef struct pcaprec_hdr_s {
guint32 ts_sec; /* timestamp seconds */
guint32 ts_usec; /* timestamp microseconds */
guint32 incl_len; /* number of octets of packet saved in file */
guint32 orig_len; /* actual length of packet */
} pcaprec_hdr_t;
#endif
#pragma pack()
int main(int argc, char* argv[])
{
int proceed;
char router_name[20];
char file_name[100];
unsigned char line[80];
FILE *file;
int x=0,i=0;
int err;
int packets=0,error_bit=0,error_crc=0,error_abort=0,error_frm=0;
pcap_hdr_t *global_hdr;
pcaprec_hdr_t *packet_hdr;
int plen=sizeof(*packet_hdr);
wanpipe_hdlc_engine_t *hdlc_eng;
int offset=14+20+8;
int len;
nice(-11);
signal(SIGINT,&sig_end);
signal(SIGTERM,&sig_end);
sprintf(file_name, argv[1]);
file=fopen(file_name, "rb");
if (!file) {
printf("Failed to open file %s ",file_name);
return -1;
}
hdlc_eng = wanpipe_reg_hdlc_engine();
hdlc_eng->hdlc_data = trace_aft_hdlc_data;
err=fread(line, 1, sizeof(*global_hdr), file);
global_hdr=(pcap_hdr_t*)&line[0];
if (global_hdr->magic_number == 0xa1b2c3d4) {
printf("Got Indetical\n");
} else if (global_hdr->magic_number == 0xd4c3b2a1) {
printf("Got Swaped\n");
} else {
printf("Not a pcap file\n");
exit (1);
}
printf("Snap len = %i global=%i packet=%i err=%i vmj=%i vmin=%i\n",
global_hdr->snaplen,sizeof(*global_hdr),sizeof(*packet_hdr),err,
global_hdr->version_major,global_hdr->version_minor);
print_packet(line,err);
printf("Size of Packet =%i\n",sizeof(pcaprec_hdr_t));
while (i++ < 100) {
err=fread(line, 1, plen, file);
if (err != plen) {
printf("Error: failed to read expecting=%i read=%i\n",
plen,err);
exit(1);
}
packet_hdr=(pcaprec_hdr_t*)&line[0];
print_packet(line,err);
len=packet_hdr->incl_len-offset;
printf("Packet(%i) Len=%i Olen=%i data=%i \n",
plen,packet_hdr->incl_len,packet_hdr->orig_len, len);
/* Ethernet + TCP + UDP */
err=fread(line, 1, offset, file);
if (err != offset) {
printf("Error: failed to read expecting=%i read=%i\n",
packet_hdr->incl_len,err);
break;
}
err=fread(line, 1, len, file);
#if 0
if (x==0 && *(unsigned int*)&line[0] != 0x7e7e7e7e) {
continue;
}
#endif
print_packet(line,err);
x=1;
wanpipe_hdlc_decode(hdlc_eng,line,err);
packets+=wanpipe_get_rx_hdlc_packets(hdlc_eng);
error_bit+=wanpipe_get_rx_hdlc_errors(hdlc_eng);
error_crc+=hdlc_eng->decoder.stats.crc;
error_abort+=hdlc_eng->decoder.stats.abort;
error_frm+=hdlc_eng->decoder.stats.frame_overflow;
printf("Status: Read=%i packet=%i crc=%i abort=%i frm=%i error=%i\n",
err,packets,error_crc,error_abort,error_frm,error_bit);
}
wanpipe_unreg_hdlc_engine(hdlc_eng);
return 0;
};